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Содержание BA377E

Страница 1: ...Issue 6 4th May 2021 BA377E Single input Intrinsically safe Timer or Clock Issue 6...

Страница 2: ...n configured as a Timer 6 4 Timer structure 6 5 Configuration as a Timer 6 5 1 Accessing configuration functions 6 5 2 Summary of Timer configuration functions 6 5 3 Instrument function FunCtion 6 5 4...

Страница 3: ...hronising time 5YnC t 9 4 7 Control output 1 Optional oP1 9 4 8 Enable Control output 1 EnbL 9 4 9 On and off times oP 1 on 1 oP 1 off 1 oP 1 on 2 oP 1 off 2 9 4 10 Control output 2 Optional oP2 9 4 1...

Страница 4: ...arate appendixes to this manual The intrinsic safety of the instrument is unaffected by whether it is configured as a Timer or as a Clock 2 1 ATEX gas certification Notified Body Intertek Testing and...

Страница 5: ...negative side is internally connected to the negative side of the power supply and the reset terminal RS2 See Fig 9 Some types of sensor that may be connected to the BA377E input such as a switch cont...

Страница 6: ...ed to the BA377E energised input The sensor and wiring should be able to withstand a 500V rms insulation test to earth and the sensor should be located in the same hazardous area as the BA377E The max...

Страница 7: ...tance and inductance between each set of control output terminals is Ci 24nF Li 8 H To determine the maximum permissible cable capacitance Ci should be subtracted from the maximum permitted external c...

Страница 8: ...s Alternatively the sensor may be located in the safe area Fig 2 shows how an additional Zener barrier is used to transfer signals to the Timer in the hazardous area When more than one Zener barrier i...

Страница 9: ...activated reed relays comply with these requirements The BA377E contains a configurable debounce circuit to prevent false triggering of the instrument Three levels of debounce protection are available...

Страница 10: ...dous area which may be combined with the supply barrier so that only one package is required A diode return barrier is not suitable for this application Fig 1 illustrates how a BA377E may be reset fro...

Страница 11: ...f the BA377E having the correct function may be used Fig 5 BA377E used with galvanic isolators Fig 5 illustrates the basic circuit that is used for all BA377E installations protected by galvanic isola...

Страница 12: ...nput signal must fall below the lower threshold and rise above the upper threshold Sensor Switching thresholds Lower Upper Low voltage range 1 0V 3 0V High voltage range 3 0V 10 0V Proximity detector...

Страница 13: ...parameters equal to or less than Uo 28V dc Io 200mA dc Po 0 84W The BA377E Timer may therefore be directly connected to and controlled by most certified intrinsically safe high level outputs The maxi...

Страница 14: ...meters complying with the requirements for simple apparatus This allows the control output terminals A1 A2 and A3 A4 to be connected to almost any certified intrinsically safe circuit protected by a g...

Страница 15: ...ogether with the recommended panel cut out dimensions To achieve an IP66 seal between the instrument enclosure and the instrument panel the smaller tolerance aperture must be used Although the front o...

Страница 16: ...ng clamps 4 4 Scale card The BA377E s units of measurement are shown on a printed scale card in a window at the right hand side of the display The scale card is mounted on a flexible strip that is ins...

Страница 17: ...rough which a scale card showing the units of measurement such as hours can be seen New instruments are fitted with a scale card showing the units of measurement specified when the instrument was orde...

Страница 18: ...mer cycle can be accomplished via the front panel push buttons or by a remote contact A grand total time is maintained which can be viewed by operating the front panel push buttons It may be reset to...

Страница 19: ...iguration function See 6 5 20 To reset the grand total to zero from the display mode press the buttons for ten seconds until CLr no is displayed using the or button change the display to CLr YE5 and p...

Страница 20: ...lete The lines between the circles represent the event required to move the Timer between states e g to initiate timing the Timer is moved from the Reset state to the Running state by a start event Th...

Страница 21: ...failure Local total reset t rE5Et on Local grand total reset Gt rE5Et oFF External reset E r5et 5td Enable control output 1 EnbL oFF Enable control output 2 EnbL oFF Optional output 6 5 1 Accessing co...

Страница 22: ...ion functions When read in conjunction with Fig 14 it provides a quick aid for configuring the Timer If more detail is required each section of this summary contains a reference to a full description...

Страница 23: ...12 00 Hours minutes 30 00 Minutes seconds 30 Seconds Excludes delay of optional control outputs which is always shown in seconds and the grand total which is always shown in hours Only available if 5e...

Страница 24: ...l total reset r5Et EnbL When on is selected Timer is reset to zero or 5et t if timing down when the and buttons are operated simultaneously for more than 3 seconds in the display mode See section 6 5...

Страница 25: ...n menu If CloC is displayed press the or button to change the setting to ELAP5E followed by the button which will result in a 0000 prompt being displayed with the first digit flashing This is a reques...

Страница 26: ...1600 s 40 s Heavy 3200 s 350 s Light 400 s 5 s 6 5 7 Lower display di5P 2 The configuration of the lower display which has six 12mm high digits depend upon whether the repeat timer function CYCLE5 whi...

Страница 27: ...on menu Options available are Voltage inputs or control from front panel Display Start Stop ControL 1 Input high Input low ControL 2 Input low Input high LoCAL button button Contact and open collector...

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Страница 30: ...o the next digit When set as required enter the selection and return to the cycl cnt prompt in the sub menu by operating the button 6 5 14 Restart delay r5t dela This sub function defines the time del...

Страница 31: ...diately Continue When power is restored the Timer will continue from where it stopped without any manual intervention To check or change the function select P fail from the configuration menu and pres...

Страница 32: ...examples in section 7 2 and 7 3 of this manual illustrate the use of the control outputs Further examples can be found in Application Guide AG374 which is available on the BEKA website 6 5 22 Control...

Страница 33: ...select op1 dELA from the control output 1 sub menu and press which will reveal the existing delay time with one digit flashing The flashing digit can be adjusted using the or button and the button to...

Страница 34: ...u When 5urE has been entered pressing the button will reset all the configuration functions and return the instrument to the display mode Note r5Et dEF does not reset the grand total to zero 7 TIMER A...

Страница 35: ...ich it stopped when the start button is operated Fig 16 Control of valve in a hazardous area The required instrument configuration for this example are shown below Function Display Setting Access code...

Страница 36: ...t BEKA if code is lost 8 2 Fault finding after commissioning ENSURE PLANT SAFETY BEFORE STARTING MAINTENANCE Live maintenance is permitted on intrinsically safe equipment installed in a hazardous area...

Страница 37: ...regularly checked Inspection frequency should be chosen to suit the environmental conditions 8 5 Guarantee Instruments which fail within the guarantee period should be returned to BEKA associates or o...

Страница 38: ...wing initialisation the instrument will display a flashing display which is a request for the local time to be entered The clock will not start to function until a display time has been entered or the...

Страница 39: ...out this manual push buttons are shown as and and legends displayed by the Clock are shown in a seven segment font as they appear on the instrument e g di5PLAY and CodE Access to the configuration men...

Страница 40: ...40...

Страница 41: ...rol output 1 Optional Control output 1 can turn on output closed and off output open twice in each twenty four hour period This function contains five sub function EnbL Enables output 1 and defines if...

Страница 42: ...time is entered the Clock will display a flashing 00 00 00 or 00 00 for 24 hour formats or A12 00 00 or A12 00 for 12 hour formats To adjust the clock set time select 5Et from the configuration menu a...

Страница 43: ...tered return to the configuration menu by pressing the button twice 9 4 10 Control output 2 Optional oP2 Control output 2 is an optional factory fitted output which can be configured to turn on output...

Страница 44: ...m the display mode may be protected by a four digit alphanumeric security code which must be entered to gain access Default security code 0000 allows unrestricted access With ACCd displayed press to e...

Страница 45: ...will then change the instrument to a Clock and return the display to FunCtion in the configuration menu Step 3 Select display format Using the or button select di5PLAY in the configuration menu and pr...

Страница 46: ...cess to the configuration menu Using the and buttons select CodE from the configuration menu and press which will reveal 0000 with the first digit flashing This example requires the security code to b...

Страница 47: ...nly certified test equipment should be used unless a gas clearance certificate is available If a BA377E fails after it has been functioning correctly as a Clock the following table may help to identif...

Страница 48: ...8 11 6 Customer comments BEKA is always pleased to receive comments from customers about our products and services All communications are acknowledged and whenever possible suggestions are implemented...

Страница 49: ...icate may be downloaded from www beka co uk www iecex com or requested from the BEKA sales office A1 2 Installation The IECEx intrinsic safety parameters are identical to the ATEX safety parameters de...

Страница 50: ...e systems shown in sections 2 and 3 of this manual may therefore also be used for US and Canadian installations subject to compliance with the local codes of practice ETL and cETL intrinsic safety cod...

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